Say I have ApplicationResources.properties which has all global level messages defined and another module specific property file. If because of some reason the key didn't find in module specific file then System should display message from my global (ApplicationResources.properties) file.
I struggled a lot to find solution for the same and finally I found one.
Keep both properties files in class path.
updated struts-config.xml file as below
<message-resources parameter="Account,ApplicationResources" null="false" />
Create CustomeActionServlet and CustomMessageResources.javause <bean:message> tag in the jsp to display text
And the message will be render from all files. Download here..